Ore-crushing machine.



' No; 876,892. PATENTED JAN, 14, 1908.

J. B. ALBERS.

ORE GRUSHING MACHINE. APPLICATIO'N Hug) JUNE 11. 1906.

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No. 876,8 92. PATENTED JAN.14, 1903.

J. B. ALBERS. ORB 'GRUsHING MACHINE.

APPLIO TIOHI 2 JUN 1.

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No. 876,892. PATENTED JAN.1 4, 1908.

" J. .B'. ALBERS.

ORE GRUSHING MAGHINE.

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UNITED srrns P ICE.

ORE-GRUSHING MACHINE.

Specification of Letters Patent.

Patented Jan. 14, 1908.

Application filed June 11. 1906- Serial No. 321277- To all whom it mayconcern:

Be it known that I, JOHN B. ALBERs, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Ore-CrushingMachines, of which the following is a specification.

It is the object of my invention to provide an ore crushing machine ofgreat efficiency and of simple construction in which the ore shall becrushed between plates or jaws, one of which is horizontally movable andthe other plate or jaw is vertically movable. I accomplish this objectby the mechanism described herein and illustrated in the accompanyingdrawings in which Figure. 1.-is a side elevation. Fig. 2is a plan ofhalf the machiine. Fig. 3.is an end elevation. Fig. 4.is a centralvertical longitudinal section. Fig. 5.is a section on the line 55 ofFig. 4 of half the machine. Fig. 6.-is a section on the line 66 of Fig.4 of half the machine. Fig. 7 .is a detail of one of the jaw operatinglevers.

In the frame 10 is revolubly mounted the operating shaft 11, on the endof which is pulley 12 to which power is applied to rotate the same. Thisshaft passes through an aperture 13 in the operating lever 14. Securedto said shaft within said aperture is cam 15 which is mounted on saidshaft eccentrically. The outer end of the operating lever is mounted onshaft 16 secured in the frame. The operating lever is preferablycomposed of the metallic portions 14 and the wooden portions 14 whichare secured together by bolts 17. The metallic portion may be of caststeel. The inner end of the cast portion projects beyond the woodenportion and is bifurcated, and the furcations project into recesses 18in the crushing jaw 19 which is reciprocated vertically by the operatinglever. .At the lower end of this jaw are the outwardly projecting lugs20 (best shown in Fig. 3) which project into receses 21 in the metalbearing block 21 which is secured to timbers of the-frame. The lowerportion of the wearing surface of this jaw is preferably composed of aremovable wearing plate 22 and the central portion is composed of thereversible wearing plates 23 which are provided with lugs 23 whichproject from both faces thereof, so that when the lugs on one sidebecome too much worn the plate may be turned and the lugs on the otherside utilized. The upper portion is provided with the removable wearingplate 24 having lugs 24 on the wearing face thereof. The other crushingjaw 25 has on the lower portion thereof a removable'wearing plate 26,and on the upper portion reversible wearing plates 27 which are providedon both surfaces with lugs 27 as best shown in Fig. 5. The lugs of thewearing plates of the crushing jaws are arranged in vertical rows, withthe rows of one plate moving intermediate those of the other plate. Theouter edge of the lower portion of the sides of the crushing jaw 25 restupon a metallic cross bar 28 which rests upon the timbers of the frame.The outer ends of this cross bar are much heavier than the intermediateportions and have apertures 28 extending horizontally therethrough,through which pass adjusting screws 29 which screw into bearing block21. These screws have a groove 30 therein in that portion thereof whichlies within the ends of the cross bar 28. These cross bars are providedwith key-ways 31 at right angles to apertures 28 in which are receivedkeys 32 which hold the screws from longitudinal movement in the bar butpermit the same to be rotated. The other portions of the lower part ofthe sides of the crushing jaw 25 project downwardly to the plane of thebottom of the bar 28 and are provided with racks 33 which mesh withpinions 34, which pinions are mounted on shaft 35.

The lower end of plate 26 is supported by coiled springs 36. Bolts 37have collars 38 secured thereto and have their outer ends threaded andpassing in threaded contact through bar 28. There is one of these boltsnear each end of bar 28 and the inner ends thereof project into thecoiled springs 36 and the outer ends are squared for the reception of awrench so that the tension of the springs may be varied, and the lowerend of plate 26 held in yielding engagement with the lower end of plate22.

As best shown in Fig. 4, the crushing jaws 19 and 25 are in engagementat the bottom thereof, but gradually separate to about the centralportion thereof, and then more rapidly separate. The sides of thecrushing jaw 25 overlap the sides of the crushing jaw 19 thereby forminga V-shaped crushing hopper. In the upper portion of the sides of jaw 25are L-shaped sockets or openin s 39 in which are received the inner ends0 the L- shaped jaw operating levers 40, which are pivotally mounted onshaft 41 which passes through jaw 19 back of plate 24 thereof. Shaft 41also passes through brace bars 42 and is secured thereto by set screws43 or other suitable means. The lower ends of these brace bars aremounted on shaft 1.6. Pitman rods 44 are pivotally secured by shaft 45to lever 14. These pitman rods engage the outer ends of the jawoperating lever 40 and are held adjustably secured thereto by blocks 46which blocks are secured to the levers by screws 47. p

In the operation of my machine power is applied to rotate the operatingshaft, thereby oscillating the free end of lever 14 which causes thereciprocation vertically of the crushing jaw 19. At the same timethrough pitman 44 and lever 40 and connected parts the upper end of thecrushing jaw 25 is caused to move away from and toward crushing jaw 19.Ore is fed into the crushing hopper and is crushed by the jaws thereof,one of which moves vertically and the other horizontally, whereby theore in the hopper is turned so as to present its weakest crushing strainto the action of the jaws. It will be observed that by varying the sizeof the cam and the length of the operating lever, and the place thereinat which the cam is mounted, a great variation can be made in therespective movements of the crushing jaws, and that by adjusting thelower end of aw 25 closer to or further away from the lower end of jaw19 the ore can be crushed finer or coarser as desired. It will also beobserved that by removing the keys which engage screws 29 the lower endof jaw 25 can be quickly separated from jaw 19 by means of the rack andpinion, and all material in the hopper can be emptied out of the same.By giving the operating lever a high rate of speed and. a slightmovement a machine of great efiiciency is provided which can be operatedwith the minimum amount of power.

It will be observed that the top of the crushing chamber is not as wideas the bottom thereof, as thereby I provide a greater discharge capacityfor the crushed ore, than would be the case if the width was the same atthe top and bottom. By width I mean the distance across the crushingjaws and between the ends thereof.

It will be observed that the lower face of the vertically moving jaw 19slopes downwardly and backwardly from the perpendicular line of the topportion of the jaw and that the face of the opposed jaw 25 slopes underjaw 19 and that the vertical movement of jaw 19, if there is ore betweenthe jaws to crush, will force the lower end of jaw 25 back against thepower of spring 36, thereby giving the ore between the jaws a rolling aswell as a squeezing action whereby the weakest crushing strain of theore is brought under the greatest crushing power of the jaws. It willalso be observed that the upward movement of jaw 19 frees itself fromcontact with the ore and at the same time the movement of thetop'portion of jaw 25 is away from jaw 19 so that the ore cannot jambetween the jaws as jaw '19 moves upwardly and that no crushing of oreis accomplished on such upward movement.

Having described myinvention what I claim as new and desire to secure byLetters Patent is 1. An ore crushing machine provided with crushing jawswhose upper ends are more widely separated than the lower ends thereofmechanism to give one of said jaws a vertical motion and the top of theother jaw a movement toward and from the jaw having the vertical motion;and mechanism to hold the lower end of said last jaw in spring pressedengagement with the bottom of the vertically moving jaw.

2. In an ore crushing machine of the character described herein, anoperating lever pivoted at one end thereof; a vertical crushing jawverticallymovable and loosely engaged by the free end of the operatinglever; and mechanism to oscillate the free end of the operating leververtically,

3. In an ore crushing machine of the char acter described herein, anoperating lever pivoted at one end thereof; a crushing jaw havingprojecting sides provided with recesses therein near the upper endthereof; a shaft passing through said recesses; L-shaped levers mountedon said shaft, said levers eX- tending within said recesses; supportsfor said shaft; and pitmen connecting the free end of said operatinglever with said L- shaped levers; and means to oscillate the free end ofsaid operating lever.

4. In an ore crushing machine a vertically moving crushing jaw havingthe up er and central portions of its crushing face ying in a verticalplane and the lower portion of the crushing face sloping downwardly andrearwardly from the plane of the other portions of the face; means toreciprocate said jaw vertically; an opposing jaw having a crushing faceyieldingly held in contact with the face of the other jaw at the bottomand diverging therefrom to the top of the jaw; means to hold the lowerend in yielding engagement with the opposed jaw; and means to move theupper end of said last jaw toward and from the upper end of the opposedaw.

5. In an ore crushing machine of the character described herein, acrushing jaw; mechhave hereunto subscribed my name this 29th anism tocause said jaw to reciprocate vertiday of May, 1906. cally; a second jawoppositely disposed to said vertical jaw; and mechanism to move 5 theupper end of. said opposed jaw toward Witnesses:

and from the vertical jaw. G. E. HARPHAM,

In witness that I claim the foregoing'l EDMUND A. STRAUsE.

JOHN B. ALBERS.

